Audio signal output device and method, encoding device and method, decoding device and method, and program
a technology of audio signal and output device, applied in the field of audio signal output device and method, en decoding device and method, and program, can solve the problem of critical problem of how to reproduce the sound of such sound sources, and achieve the effect of realizing feeling
Active Publication Date: 2016-05-05
SONY CORP
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- Application Information
AI Technical Summary
Benefits of technology
This patent technology allows for audio playback that gives a more realistic feel.
Problems solved by technology
Where the positions of the speakers on the reproducing side differ from the positions of the sound sources, there is occurrence of a sound source that is not located in the speaker's position, therefore how to reproduce the sound of such sound sources is a critical issue.
Method used
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Outline of the Present Technology
[0046]The present technology relates to a reproduction method of reproducing the sound source of a channel with a desired number of speakers, and techniques for encoding and decoding the necessary information (metadata) for realizing the reproduction method.
[0047]First, the outline of the present technology is described.
[0048]Audio signals of channels and the metadata of these audio signals are supplied to a reproduction device, and the reproduction device controls sound reproduction based on the metadata and the audio signals, for example.
[0049]The audio signals of the respective channels are signals generated to be reproduced through speakers placed at ideal positions indicated by the metadata. In the description below, the virtual speakers that are placed at positions indicated by the metadata and reproduce the audio signals of the respective channels will be referred to as the ideal speakers. Also, the real speakers that output sounds based on au...
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The present technology relates to an audio signal output device and a method, an encoding device and a method, a decoding device and a method, and a program for realizing audio reproduction with a more realistic feeling.In a case where an audio signal generated to be output as a sound from an ideal speaker that is a virtual speaker placed in an ideal position is input, the distance between the ideal speaker and a real reproduction speaker is determined. Gain adjustment is then performed on the audio signal with the gain corresponding to the determined distance, the audio signal subjected to the gain adjustment is reproduced by the reproduction speaker. Accordingly, even in a case where there is a difference in position between the ideal speaker and the reproduction speaker, audio reproduction with a more realistic feeling can be realized. The present technology can be applied to reproduction devices.
Description
TECHNICAL FIELD[0001]The present technology relates to an audio signal output device and a method, an encoding device and a method, a decoding device and a method, and a program, and more particularly, to an audio signal output device and a method, an encoding device and a method, a decoding device and a method, and a program that are designed to be capable of audio reproduction with a more realistic feeling.BACKGROUND ART[0002]In multichannel audio reproduction, the positions of the speakers on the reproducing side preferably correspond to the positions of the sound sources. In reality, however, the positions of the speakers on the reproducing side often differ from the positions of the sound sources.[0003]Where the positions of the speakers on the reproducing side differ from the positions of the sound sources, there is occurrence of a sound source that is not located in the speaker's position, therefore how to reproduce the sound of such sound sources is a critical issue.[0004]A ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H04S7/00G10L19/008
CPCH04S7/301H04S7/308G10L19/008G10L21/034H04S5/005H04S7/302H04S5/02
InventorSHI, RUNYUCHINEN, TORUYAMAMOTO, YUKIHATANAKA, MITSUYUKI
OwnerSONY CORP